-3.4% is the change from 853 to 824
Calculation steps:
[( 824 - 853 ) ÷ 853] x 100 = -3.4%
Formula
Percentage change = [(824 - 853) / 853] x 100
Subtract the new number by the original number
824 - 853 = -29
-29 ÷ 853 = -0.03399765533411489
-0.03399765533411489 x 100 = -3.4%